Key Takeaways
- • TPG GP Solutions has become the sole lead investor in UK accountancy group Sumer Group in a single asset continuation vehicle deal valuing the business at £1bn enterprise value.
- • Existing backer Penta Capital Partners remains involved and will continue supporting Sumer over a further four-year investment cycle, allowing it to provide liquidity to its limited partners without a full sale.
- • Sumer refinanced its existing debt with new lenders including funds managed by Ares, BlackRock, Pemberton and Investec.
- • Sumer reported revenue of £283.7m for the year ended 30 June 2025, up 12% year on year, and is the 11th largest accountancy group in the UK per the Business & Accountancy Daily Top 75 Firms Survey.
- • The new capital will fund a buy-and-build acquisition programme targeting regional UK accountancy firms, following more than 50 acquisitions since the group's founding in 2022.
Summary
TPG GP Solutions has agreed to become the sole lead investor in Sumer Group, the UK accountancy and professional services group, in a transaction that values the business at £1bn enterprise value, according to Business & Accountancy Daily. The deal is structured as a single asset continuation vehicle. Private equity backer Penta Capital Partners remains a partner in the business and will continue to support its development over the next four-year investment cycle, while TPG replaces Penta as the sole lead investor. The new backers said the transaction "delivers attractive returns and optional liquidity to existing Penta limited partners."
As part of the transaction, Sumer has refinanced its existing debt with new lenders, including funds managed by Ares, BlackRock, Pemberton and Investec, to support its go-forward plan. The capital injection will also fund further merger and acquisition activity under Sumer's buy-and-build programme, which focuses on regional, local accountancy firms typically with three to four partners and a core base of SME clients.
Sumer was founded in 2022 by Warren Mead, a former Big Four partner who left KPMG to set up the group. It has completed more than 50 acquisitions in four years and is approaching top 10 firm ranking. The group ranked 11th largest accountancy group in the UK in the Business & Accountancy Daily Top 75 Firms Survey, with revenue of £283.7m for the year ended 30 June 2025, up 12% year on year. Management says the group has a run rate approaching £350m of revenue for the current financial year, with more than 200 partner equivalents and around 3,500 staff. Mead describes the operating approach as a "hub and spoke" model, with acquired firms typically retaining their own names under the Sumer brand and centralised investment in technology and automation.
Penta's Steven Scott, managing partner, said there is "enormous opportunity ahead for the business." Jason Harvie, investment director at Penta, described Sumer as one of the few businesses in European professional services to scale significantly while delivering strong organic growth. Matt Jones, co-managing partner of TPG GP Solutions, called the deal a "significant opportunity" in an area where TPG has deep sector expertise.
The transaction reflects a broader trend in the sector. According to the Top 75 Firms Survey, a third of the Top 75 firms are now backed by private equity, rising to 40% within the Top 20. Petr Poldauf, investment director at Schroders Capital, said continuation investments allow existing managers to retain ownership of businesses they know well while offering liquidity to investors who want it, without forcing a full sale or a change of control.
As part of the transaction, Sumer has refinanced its existing debt with new lenders, including funds managed by Ares, BlackRock, Pemberton and Investec, to support its go-forward plan. The capital injection will also fund further merger and acquisition activity under Sumer's buy-and-build programme, which focuses on regional, local accountancy firms typically with three to four partners and a core base of SME clients.
Sumer was founded in 2022 by Warren Mead, a former Big Four partner who left KPMG to set up the group. It has completed more than 50 acquisitions in four years and is approaching top 10 firm ranking. The group ranked 11th largest accountancy group in the UK in the Business & Accountancy Daily Top 75 Firms Survey, with revenue of £283.7m for the year ended 30 June 2025, up 12% year on year. Management says the group has a run rate approaching £350m of revenue for the current financial year, with more than 200 partner equivalents and around 3,500 staff. Mead describes the operating approach as a "hub and spoke" model, with acquired firms typically retaining their own names under the Sumer brand and centralised investment in technology and automation.
Penta's Steven Scott, managing partner, said there is "enormous opportunity ahead for the business." Jason Harvie, investment director at Penta, described Sumer as one of the few businesses in European professional services to scale significantly while delivering strong organic growth. Matt Jones, co-managing partner of TPG GP Solutions, called the deal a "significant opportunity" in an area where TPG has deep sector expertise.
The transaction reflects a broader trend in the sector. According to the Top 75 Firms Survey, a third of the Top 75 firms are now backed by private equity, rising to 40% within the Top 20. Petr Poldauf, investment director at Schroders Capital, said continuation investments allow existing managers to retain ownership of businesses they know well while offering liquidity to investors who want it, without forcing a full sale or a change of control.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.